/****************************************************************************** * * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ***************************************************************************** * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore */ /** ******************************************************************************* * @file * ih264_common_tables.c * * @brief * Contains common global tables * * @author * ittiam * * @remarks * none * ******************************************************************************* */ /*****************************************************************************/ /* File Includes */ /*****************************************************************************/ /* User Include Files */ #include "ih264_typedefs.h" #include "ih264_macros.h" #include "ih264_defs.h" #include "ih264_structs.h" #include "ih264_common_tables.h" /*****************************************************************************/ /* Global definitions */ /*****************************************************************************/ /** ****************************************************************************** * @brief while encoding, basing on the input configuration parameters, the * the level of the bitstream is computed basing on the table below. * input : table_idx * output : level_idc or cpb size * @remarks Table A-1 - level table limits ****************************************************************************** */ const level_tables_t gas_ih264_lvl_tbl[16] = { { IH264_LEVEL_10, 1485, 99, 297, 64, 175, 64 }, { IH264_LEVEL_1B, 1485, 99, 297, 128, 350, 64 }, { IH264_LEVEL_11, 3000, 396, 675, 192, 500, 128 }, { IH264_LEVEL_12, 6000, 396, 1782, 384, 1000, 128 }, { IH264_LEVEL_13, 11880, 396, 1782, 768, 2000, 128 }, { IH264_LEVEL_20, 11880, 396, 1782, 2000, 2000, 128 }, { IH264_LEVEL_21, 19800, 792, 3564, 4000, 4000, 256 }, { IH264_LEVEL_22, 20250, 1620, 6075, 4000, 4000, 256 }, { IH264_LEVEL_30, 40500, 1620, 6075, 10000, 10000, 256 }, { IH264_LEVEL_31, 108000, 3600, 13500, 14000, 14000, 512 }, { IH264_LEVEL_32, 216000, 5120, 15360, 20000, 20000, 512 }, { IH264_LEVEL_40, 245760, 8192, 24576, 20000, 25000, 512 }, { IH264_LEVEL_41, 245760, 8192, 24576, 50000, 62500, 512 }, { IH264_LEVEL_42, 522240, 8704, 26112, 50000, 62500, 512 }, { IH264_LEVEL_50, 589824, 22080, 82800, 135000, 135000, 512 }, { IH264_LEVEL_51, 983040, 36864, 138240, 240000, 240000, 512 }, }; /* Array containing supported levels */ const WORD32 gai4_ih264_levels[] = { IH264_LEVEL_10, IH264_LEVEL_11, IH264_LEVEL_12, IH264_LEVEL_13, IH264_LEVEL_20, IH264_LEVEL_21, IH264_LEVEL_22, IH264_LEVEL_30, IH264_LEVEL_31, IH264_LEVEL_32, IH264_LEVEL_40, IH264_LEVEL_41, IH264_LEVEL_42, IH264_LEVEL_50, IH264_LEVEL_51, }; /* Array giving size of max luma samples in a picture for a given level */ const WORD32 gai4_ih264_max_luma_pic_size[] = { /* Level 1 */ 25344, /* Level 1.1 */ 101376, /* Level 1.2 */ 101376, /* Level 1.3 */ 101376, /* Level 2 */ 101376, /* Level 2.1 */ 202752, /* Level 2.2 */ 414720, /* Level 3 */ 414720, /* Level 3.1 */ 921600, /* Level 3.2 */ 1310720, /* Level 4 */ 2097152, /* Level 4.1 */ 2097152, /* Level 4.2 */ 2228224, /* Level 5 */ 5652480, /* Level 5.1 */ 9437184 }; /* Max width and height allowed for a given level */ /* This is derived as SQRT(8 * gai4_ih264_max_luma_pic_size[]) */ const WORD32 gai4_ih264_max_wd_ht[] = { /* Level 1 */ 451, /* Level 1.1 */ 901, /* Level 1.2 */ 901, /* Level 1.3 */ 901, /* Level 2 */ 901, /* Level 2.1 */ 1274, /* Level 2.2 */ 1822, /* Level 3 */ 1822, /* Level 3.1 */ 2716, /* Level 3.2 */ 3239, /* Level 4 */ 4096, /* Level 4.1 */ 4096, /* Level 4.2 */ 4223, /* Level 5 */ 6725, /* Level 5.1 */ 8689 }; /* Min width and height allowed for a given level */ /* This is derived as gai4_ih264_max_luma_pic_size[]/gai4_ih264_max_wd_ht[] */ const WORD32 gai4_ih264_min_wd_ht[] = { /* Level 1 */ 57, /* Level 1.1 */ 113, /* Level 1.2 */ 113, /* Level 1.3 */ 113, /* Level 2 */ 113, /* Level 2.1 */ 160, /* Level 2.2 */ 228, /* Level 3 */ 228, /* Level 3.1 */ 340, /* Level 3.2 */ 405, /* Level 4 */ 512, /* Level 4.1 */ 512, /* Level 4.2 */ 528, /* Level 5 */ 841, /* Level 5.1 */ 1087 }; /* Table 7-11 Macroblock types for I slices */ intra_mbtype_info_t gas_ih264_i_mbtype_info[] = { /* For first entry, if transform_size_8x8_flag is 1, mode will be MBPART_I8x8 */ /* This has to be taken care while accessing the table */ {0, MBPART_I4x4, VERT_I16x16, 0, 0}, {0, MBPART_I16x16, VERT_I16x16, 0, 0}, {0, MBPART_I16x16, HORZ_I16x16, 0, 0}, {0, MBPART_I16x16, DC_I16x16, 0, 0}, {0, MBPART_I16x16, PLANE_I16x16, 0, 0}, {0, MBPART_I16x16, VERT_I16x16, 1, 0}, {0, MBPART_I16x16, HORZ_I16x16, 1, 0}, {0, MBPART_I16x16, DC_I16x16, 1, 0}, {0, MBPART_I16x16, PLANE_I16x16, 1, 0}, {0, MBPART_I16x16, VERT_I16x16, 2, 0}, {0, MBPART_I16x16, HORZ_I16x16, 2, 0}, {0, MBPART_I16x16, DC_I16x16, 2, 0}, {0, MBPART_I16x16, PLANE_I16x16, 2, 0}, {0, MBPART_I16x16, VERT_I16x16, 0, 15}, {0, MBPART_I16x16, HORZ_I16x16, 0, 15}, {0, MBPART_I16x16, DC_I16x16, 0, 15}, {0, MBPART_I16x16, PLANE_I16x16, 0, 15}, {0, MBPART_I16x16, VERT_I16x16, 1, 15}, {0, MBPART_I16x16, HORZ_I16x16, 1, 15}, {0, MBPART_I16x16, DC_I16x16, 1, 15}, {0, MBPART_I16x16, PLANE_I16x16, 1, 15}, {0, MBPART_I16x16, VERT_I16x16, 2, 15}, {0, MBPART_I16x16, HORZ_I16x16, 2, 15}, {0, MBPART_I16x16, DC_I16x16, 2, 15}, {0, MBPART_I16x16, PLANE_I16x16, 2, 15}, {0, MBPART_IPCM, VERT_I16x16, 0, 0} }; /* Table 7-13 Macroblock types for P slices */ inter_mbtype_info_t gas_ih264_p_mbtype_info[] = { {1, MBPART_L0, MBPART_NA, 16, 16}, {2, MBPART_L0, MBPART_L0, 16, 8}, {2, MBPART_L0, MBPART_L0, 8, 16}, {4, MBPART_NA, MBPART_NA, 8, 8}, {4, MBPART_NA, MBPART_NA, 8, 8}, }; /* Table 7-14 Macroblock types for B slices */ inter_mbtype_info_t gas_ih264_b_mbtype_info[] = { {0, MBPART_DIRECT, MBPART_NA, 8, 8, }, {1, MBPART_L0, MBPART_NA, 16, 16, }, {1, MBPART_L1, MBPART_NA, 16, 16, }, {1, MBPART_BI, MBPART_NA, 16, 16, }, {2, MBPART_L0, MBPART_L0, 16, 8, }, {2, MBPART_L0, MBPART_L0, 8, 16, }, {2, MBPART_L1, MBPART_L1, 16, 8, }, {2, MBPART_L1, MBPART_L1, 8, 16, }, {2, MBPART_L0, MBPART_L1, 16, 8, }, {2, MBPART_L0, MBPART_L1, 8, 16, }, {2, MBPART_L1, MBPART_L0, 16, 8, }, {2, MBPART_L1, MBPART_L0, 8, 16, }, {2, MBPART_L0, MBPART_BI, 16, 8, }, {2, MBPART_L0, MBPART_BI, 8, 16, }, {2, MBPART_L1, MBPART_BI, 16, 8, }, {2, MBPART_L1, MBPART_BI, 8, 16, }, {2, MBPART_BI, MBPART_L0, 16, 8, }, {2, MBPART_BI, MBPART_L0, 8, 16, }, {2, MBPART_BI, MBPART_L1, 16, 8, }, {2, MBPART_BI, MBPART_L1, 8, 16, }, {2, MBPART_BI, MBPART_BI, 16, 8, }, {2, MBPART_BI, MBPART_BI, 8, 16, }, {4, MBPART_NA, MBPART_NA, 8, 8, }, }; /* Table 7-17 - Sub-macroblock types in P macroblocks */ submbtype_info_t gas_ih264_p_submbtype_info[] = { {1, MBPART_L0, 8, 8}, {2, MBPART_L0, 8, 4}, {2, MBPART_L0, 4, 8}, {4, MBPART_L0, 4, 4}, }; /* Table 7-18 - Sub-macroblock types in B macroblocks */ submbtype_info_t gas_ih264_b_submbtype_info[] = { {4, MBPART_DIRECT, 4, 4}, {1, MBPART_L0, 8, 8}, {1, MBPART_L1, 8, 8}, {1, MBPART_BI, 8, 8}, {2, MBPART_L0, 8, 4}, {2, MBPART_L0, 4, 8}, {2, MBPART_L1, 8, 4}, {2, MBPART_L1, 4, 8}, {2, MBPART_BI, 8, 4}, {2, MBPART_BI, 4, 8}, {4, MBPART_L0, 4, 4}, {4, MBPART_L1, 4, 4}, {4, MBPART_BI, 4, 4}, }; const UWORD8 gau1_ih264_inv_scan_prog4x4[] = { 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15 }; const UWORD8 gau1_ih264_inv_scan_int4x4[] = { 0, 4, 1, 8, 12, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15 }; /* Inverse scan tables for individual 4x4 blocks of 8x8 transform coeffs of CAVLC */ /* progressive */ const UWORD8 gau1_ih264_inv_scan_prog8x8_cavlc[64] = { 0, 9, 17, 18, 12, 40, 27, 7, 35, 57, 29, 30, 58, 38, 53, 47, 1, 2, 24, 11, 19, 48, 20, 14, 42, 50, 22, 37, 59, 31, 60, 55, 8, 3, 32, 4, 26, 41, 13, 21, 49, 43, 15, 44, 52, 39, 61, 62, 16, 10, 25, 5, 33, 34, 6, 28, 56, 36, 23, 51, 45, 46, 54, 63 }; /* interlace */ const UWORD8 gau1_ih264_inv_scan_int8x8_cavlc[64] = { 0, 9, 2, 56, 18, 26, 34, 27, 35, 28, 36, 29, 45, 7, 54, 39, 8, 24, 25, 33, 41, 11, 42, 12, 43, 13, 44, 14, 53, 15, 62, 47, 16, 32, 40, 10, 49, 4, 50, 5, 51, 6, 52, 22, 61, 38, 23, 55, 1, 17, 48, 3, 57, 19, 58, 20, 59, 21, 60, 37, 30, 46, 31, 63 }; /*Inverse scan tables for individual 8x8 blocks of 8x8 transform coeffs of CABAC */ /* progressive */ const UWORD8 gau1_ih264_inv_scan_prog8x8_cabac[64] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63 }; /* interlace */ const UWORD8 gau1_ih264_inv_scan_int8x8_cabac[64] = { 0, 8, 16, 1, 9, 24, 32, 17, 2, 25, 40, 48, 56, 33, 10, 3, 18, 41, 49, 57, 26, 11, 4, 19, 34, 42, 50, 58, 27, 12, 5, 20, 35, 43, 51, 59, 28, 13, 6, 21, 36, 44, 52, 60, 29, 14, 22, 37, 45, 53, 61, 30, 7, 15, 38, 46, 54, 62, 23, 31, 39, 47, 55, 63 }; const UWORD8 *const gpau1_ih264_inv_scan8x8[] = { gau1_ih264_inv_scan_prog8x8_cavlc, gau1_ih264_inv_scan_int8x8_cavlc, gau1_ih264_inv_scan_prog8x8_cabac, gau1_ih264_inv_scan_int8x8_cabac }; const UWORD8 *const gpau1_ih264_inv_scan4x4[] = { gau1_ih264_inv_scan_prog4x4, gau1_ih264_inv_scan_int4x4, }; const UWORD8 gau1_ih264_8x8_subblk_idx[] = { 0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15 }; /* Table 8-15 Chroma QP offset table */ const UWORD8 gau1_ih264_chroma_qp[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 34, 35, 35, 36, 36, 37, 37, 37, 38, 38, 38, 39, 39, 39, 39 }; /** ****************************************************************************** * @brief look up table to compute neigbour availability of 4x4 blocks * input : subblk idx, mb neighbor availability * output : sub blk neighbor availability * @remarks ****************************************************************************** */ const UWORD8 gau1_ih264_4x4_ngbr_avbl[16][16] = { { 0x0, 0x1, 0xc, 0x7, 0x1, 0x1, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x1, 0x1, 0xf, 0x7, 0x1, 0x1, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x2, 0x1, 0xc, 0x7, 0x1, 0x1, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x3, 0x1, 0xf, 0x7, 0x1, 0x1, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xd, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xe, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x0, 0x1, 0xc, 0x7, 0x1, 0x9, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x1, 0x1, 0xf, 0x7, 0x1, 0x9, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x2, 0x1, 0xc, 0x7, 0x1, 0x9, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0x3, 0x1, 0xf, 0x7, 0x1, 0x9, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xc, 0xf, 0xc, 0x7, 0xf, 0xf, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xd, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xe, 0xf, 0xc, 0x7, 0xf, 0xf, 0xf, 0x7, 0xc, 0xf, 0xc, 0x7, 0xf, 0x7, 0xf, 0x7 }, { 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0x7, 0xf, 0x7, 0xf, 0x7 }, }; /** ****************************************************************************** * @brief look up table to compute neigbour availability of 8x8 blocks * input : subblk idx, mb neighbor availability * output : sub blk neighbor availability * @remarks ****************************************************************************** */ const UWORD8 gau1_ih264_8x8_ngbr_avbl[16][4] = { { 0x0, 0x1, 0xc, 0x7 }, { 0x1, 0x1, 0xf, 0x7 }, { 0x2, 0x1, 0xc, 0x7 }, { 0x3, 0x1, 0xf, 0x7 }, { 0xc, 0x7, 0xc, 0x7 }, { 0xd, 0x7, 0xf, 0x7 }, { 0xe, 0x7, 0xc, 0x7 }, { 0xf, 0x7, 0xf, 0x7 }, { 0x0, 0x9, 0xc, 0x7 }, { 0x1, 0x9, 0xf, 0x7 }, { 0x2, 0x9, 0xc, 0x7 }, { 0x3, 0x9, 0xf, 0x7 }, { 0xc, 0xf, 0xc, 0x7 }, { 0xd, 0xf, 0xf, 0x7 }, { 0xe, 0xf, 0xc, 0x7 }, { 0xf, 0xf, 0xf, 0x7 }, }; /* Table 7-3 Default intra 4x4 scaling list */ const UWORD16 gau2_ih264_default_intra4x4_scaling_list[] = { 6, 13, 13, 20, 20, 20, 28, 28, 28, 28, 32, 32, 32, 37, 37, 42 }; /* Table 7-3 Default inter 4x4 scaling list */ const UWORD16 gau2_ih264_default_inter4x4_scaling_list[] = { 10, 14, 14, 20, 20, 20, 24, 24, 24, 24, 27, 27, 27, 30, 30, 34 }; /* Inverse scanned output of gau2_ih264_default_intra4x4_scaling_list */ const UWORD16 gau2_ih264_default_intra4x4_weight_scale[] = { 6, 13, 20, 28, 13, 20, 28, 32, 20, 28, 32, 37, 28, 32, 37, 42 }; /* Inverse scanned output of gau2_ih264_default_inter4x4_scaling_list */ const UWORD16 gau2_ih264_default_inter4x4_weight_scale[] = { 10, 14, 20, 24, 14, 20, 24, 27, 20, 24, 27, 30, 24, 27, 30, 34 }; /* Table 7-4 Default intra 8x8 scaling list */ const UWORD16 gau2_ih264_default_intra8x8_scaling_list[] = { 6, 10, 10, 13, 11, 13, 16, 16, 16, 16, 18, 18, 18, 18, 18, 23, 23, 23, 23, 23, 23, 25, 25, 25, 25, 25, 25, 25, 27, 27, 27, 27, 27, 27, 27, 27, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 31, 33, 33, 33, 33, 33, 36, 36, 36, 36, 38, 38, 38, 40, 40, 42 }; /* Table 7-4 Default inter 8x8 scaling list */ const UWORD16 gau2_ih264_default_inter8x8_scaling_list[] = { 9, 13, 13, 15, 13, 15, 17, 17, 17, 17, 19, 19, 19, 19, 19, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 28, 30, 30, 30, 30, 32, 32, 32, 33, 33, 35 }; /* Inverse scanned output of gau2_ih264_default_intra8x8_scaling_list */ const UWORD16 gau2_ih264_default_intra8x8_weight_scale[] = { 6, 10, 13, 16, 18, 23, 25, 27, 10, 11, 16, 18, 23, 25, 27, 29, 13, 16, 18, 23, 25, 27, 29, 31, 16, 18, 23, 25, 27, 29, 31, 33, 18, 23, 25, 27, 29, 31, 33, 36, 23, 25, 27, 29, 31, 33, 36, 38, 25, 27, 29, 31, 33, 36, 38, 40, 27, 29, 31, 33, 36, 38, 40, 42 }; /* Inverse scanned output of gau2_ih264_default_inter8x8_scaling_list */ const UWORD16 gau2_ih264_default_inter8x8_weight_scale[] = { 9, 13, 15, 17, 19, 21, 22, 24, 13, 13, 17, 19, 21, 22, 24, 25, 15, 17, 19, 21, 22, 24, 25, 27, 17, 19, 21, 22, 24, 25, 27, 28, 19, 21, 22, 24, 25, 27, 28, 30, 21, 22, 24, 25, 27, 28, 30, 32, 22, 24, 25, 27, 28, 30, 32, 33, 24, 25, 27, 28, 30, 32, 33, 35 }; /* Eq 7-8 Flat scaling matrix for 4x4 */ const UWORD16 gau2_ih264_flat_4x4_weight_scale[] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 }; /* Eq 7-9 Flat scaling matrix for 8x8 */ const UWORD16 gau2_ih264_flat_8x8_weight_scale[] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 }; /** ****************************************************************************** * @brief Scale Table for inverse quantizing 4x4 subblock. To inverse quantize * a given 4x4 quantized block, the coefficient at index location (i,j) is scaled * by one of the constants in this table and right shift the result by abs (4 - * floor(qp/6)), here qp is the quantization parameter used to quantize the mb. * * input : 16 * qp%6, index location (i,j) * output : scale constant. * * @remarks 16 constants for each index position of the subblock and 6 for each * qp%6 in the range 0-5 inclusive. ****************************************************************************** */ const UWORD16 gau2_ih264_iquant_scale_matrix_4x4[96] = { 10, 13, 10, 13, 13, 16, 13, 16, 10, 13, 10, 13, 13, 16, 13, 16, 11, 14, 11, 14, 14, 18, 14, 18, 11, 14, 11, 14, 14, 18, 14, 18, 13, 16, 13, 16, 16, 20, 16, 20, 13, 16, 13, 16, 16, 20, 16, 20, 14, 18, 14, 18, 18, 23, 18, 23, 14, 18, 14, 18, 18, 23, 18, 23, 16, 20, 16, 20, 20, 25, 20, 25, 16, 20, 16, 20, 20, 25, 20, 25, 18, 23, 18, 23, 23, 29, 23, 29, 18, 23, 18, 23, 23, 29, 23, 29, }; /** ****************************************************************************** * @brief Scale Table for inverse quantizing 8x8 subblock. To inverse quantize * a given 8x8 quantized block, the coefficient at index location (i,j) is scaled * by one of the constants in this table and right shift the result by abs (4 - * floor(qp/6)), here qp is the quantization parameter used to quantize the mb. * * input : qp%6, index location (i,j) * output : scale constant. * * @remarks 64 constants for each index position of the subblock and 6 for each * qp%6 in the range 0-5 inclusive. ****************************************************************************** */ const UWORD16 gau2_ih264_iquant_scale_matrix_8x8 [384] = { 20, 19, 25, 19, 20, 19, 25, 19, 19, 18, 24, 18, 19, 18, 24, 18, 25, 24, 32, 24, 25, 24, 32, 24, 19, 18, 24, 18, 19, 18, 24, 18, 20, 19, 25, 19, 20, 19, 25, 19, 19, 18, 24, 18, 19, 18, 24, 18, 25, 24, 32, 24, 25, 24, 32, 24, 19, 18, 24, 18, 19, 18, 24, 18, 22, 21, 28, 21, 22, 21, 28, 21, 21, 19, 26, 19, 21, 19, 26, 19, 28, 26, 35, 26, 28, 26, 35, 26, 21, 19, 26, 19, 21, 19, 26, 19, 22, 21, 28, 21, 22, 21, 28, 21, 21, 19, 26, 19, 21, 19, 26, 19, 28, 26, 35, 26, 28, 26, 35, 26, 21, 19, 26, 19, 21, 19, 26, 19, 26, 24, 33, 24, 26, 24, 33, 24, 24, 23, 31, 23, 24, 23, 31, 23, 33, 31, 42, 31, 33, 31, 42, 31, 24, 23, 31, 23, 24, 23, 31, 23, 26, 24, 33, 24, 26, 24, 33, 24, 24, 23, 31, 23, 24, 23, 31, 23, 33, 31, 42, 31, 33, 31, 42, 31, 24, 23, 31, 23, 24, 23, 31, 23, 28, 26, 35, 26, 28, 26, 35, 26, 26, 25, 33, 25, 26, 25, 33, 25, 35, 33, 45, 33, 35, 33, 45, 33, 26, 25, 33, 25, 26, 25, 33, 25, 28, 26, 35, 26, 28, 26, 35, 26, 26, 25, 33, 25, 26, 25, 33, 25, 35, 33, 45, 33, 35, 33, 45, 33, 26, 25, 33, 25, 26, 25, 33, 25, 32, 30, 40, 30, 32, 30, 40, 30, 30, 28, 38, 28, 30, 28, 38, 28, 40, 38, 51, 38, 40, 38, 51, 38, 30, 28, 38, 28, 30, 28, 38, 28, 32, 30, 40, 30, 32, 30, 40, 30, 30, 28, 38, 28, 30, 28, 38, 28, 40, 38, 51, 38, 40, 38, 51, 38, 30, 28, 38, 28, 30, 28, 38, 28, 36, 34, 46, 34, 36, 34, 46, 34, 34, 32, 43, 32, 34, 32, 43, 32, 46, 43, 58, 43, 46, 43, 58, 43, 34, 32, 43, 32, 34, 32, 43, 32, 36, 34, 46, 34, 36, 34, 46, 34, 34, 32, 43, 32, 34, 32, 43, 32, 46, 43, 58, 43, 46, 43, 58, 43, 34, 32, 43, 32, 34, 32, 43, 32, };